.page-about {
  --about-line: rgba(111, 131, 122, 0.30);
  --about-line-strong: rgba(183, 243, 74, 0.38);
  --about-cut: 14px;
  --about-cut-sm: 8px;
  --tl-pad: 26px;
  background: var(--green-deep);
  color: var(--paper);
  font-family: var(--font-sans);
  overflow-x: clip;
}

.page-about .breadcrumb {
  padding: clamp(18px, 3vw, 28px) 0 0;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--mist);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
}

.page-about .breadcrumb a {
  color: var(--mist);
  text-decoration: none;
}

.page-about .breadcrumb a:hover,
.page-about .breadcrumb a:focus-visible {
  color: var(--lime);
}

.page-about .breadcrumb__sep {
  color: var(--steel);
}

/* ---------- hero ---------- */
.page-about .about-hero {
  position: relative;
  padding: clamp(24px, 4vw, 44px) 0 clamp(40px, 7vw, 84px);
}

.page-about .about-hero::before {
  content: "";
  position: absolute;
  inset: 0 0 auto auto;
  width: min(620px, 70%);
  height: 100%;
  background: linear-gradient(200deg, rgba(43, 42, 102, 0.55), rgba(11, 31, 26, 0) 68%);
  clip-path: polygon(24% 0, 100% 0, 100% 100%, 0 100%);
  pointer-events: none;
}

.page-about .about-hero__grid {
  position: relative;
  display: grid;
  gap: clamp(26px, 4vw, 52px);
  align-items: end;
}

.page-about .eyebrow {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--lime);
  margin: 0 0 14px;
  text-transform: uppercase;
}

.page-about .about-hero__title {
  margin: 0 0 20px;
  font-family: var(--font-condensed);
  font-weight: 800;
  font-size: clamp(36px, 7.2vw, 78px);
  line-height: 1.02;
  letter-spacing: -0.01em;
  color: var(--paper);
}

.page-about .about-hero__lede {
  margin: 0 0 24px;
  max-width: 48ch;
  font-size: clamp(15px, 1.7vw, 17px);
  line-height: 1.8;
  color: var(--mist);
}

.page-about .about-hero__facts {
  list-style: none;
  margin: 0 0 28px;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.page-about .fact {
  display: flex;
  align-items: baseline;
  gap: 6px;
  padding: 8px 14px;
  border: 1px solid var(--about-line);
  background: rgba(18, 51, 44, 0.55);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--about-cut-sm)), calc(100% - var(--about-cut-sm)) 100%, 0 100%);
  font-size: 12px;
  color: var(--mist);
}

.page-about .fact__num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 17px;
  color: var(--lime);
}

.page-about .about-hero__media {
  margin: 0;
  border: 1px solid var(--about-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 32px), calc(100% - 32px) 100%, 0 100%);
  background: linear-gradient(150deg, var(--green-panel), var(--indigo));
}

.page-about .about-hero__media img,
.page-about .about-chapter__figure img,
.page-about .flow-figure img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.page-about .media-frame {
  overflow: hidden;
}

/* ---------- chapter index ---------- */
.page-about .about-index {
  border-top: 1px solid var(--about-line);
  border-bottom: 1px solid var(--about-line);
  background: rgba(7, 11, 10, 0.6);
}

.page-about .about-index__inner {
  display: flex;
  gap: 8px;
  padding: 12px 0;
  overflow-x: auto;
  scrollbar-width: thin;
}

.page-about .about-index__link {
  flex: 0 0 auto;
  display: inline-flex;
  align-items: baseline;
  gap: 7px;
  padding: 7px 12px;
  font-size: 12px;
  letter-spacing: 0.02em;
  color: var(--mist);
  text-decoration: none;
  border: 1px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

.page-about .about-index__num {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--steel);
}

.page-about .about-index__link:hover,
.page-about .about-index__link:focus-visible {
  color: var(--lime);
  border-color: var(--about-line-strong);
}

.page-about .about-index__link:hover .about-index__num,
.page-about .about-index__link:focus-visible .about-index__num {
  color: var(--amber);
}

/* ---------- chapter shell ---------- */
.page-about .about-chapter {
  padding: clamp(48px, 8vw, 104px) 0;
  scroll-margin-top: 88px;
}

.page-about .about-chapter__grid {
  display: grid;
  gap: clamp(30px, 5vw, 60px);
}

.page-about .about-chapter__main,
.page-about .about-chapter__aside {
  min-width: 0;
}

.page-about .about-chapter--origin {
  background: var(--green-deep);
}

.page-about .about-chapter--timeline {
  background: linear-gradient(180deg, rgba(43, 42, 102, 0.92), rgba(43, 42, 102, 0.55) 78%, rgba(11, 31, 26, 0));
}

.page-about .about-chapter--team {
  background: var(--green-deep);
}

.page-about .about-chapter--check {
  background: linear-gradient(180deg, rgba(90, 31, 50, 0.92), rgba(90, 31, 50, 0.42) 82%, rgba(11, 31, 26, 0));
}

.page-about .about-chapter--topics {
  background: var(--green-deep);
}

.page-about .about-chapter--partners {
  background: linear-gradient(180deg, rgba(18, 51, 44, 0.9), rgba(7, 11, 10, 0.95));
  border-top: 1px solid var(--about-line);
}

.page-about .chapter-kicker {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--amber);
  margin: 0 0 14px;
}

.page-about .chapter-head {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: clamp(12px, 2.5vw, 26px);
  align-items: start;
  margin-bottom: clamp(18px, 3vw, 28px);
}

.page-about .chapter-head--wide {
  grid-template-columns: auto 1fr;
  margin-bottom: clamp(26px, 4vw, 44px);
}

.page-about .chapter-num {
  font-family: var(--font-condensed);
  font-weight: 800;
  font-size: clamp(44px, 9vw, 104px);
  line-height: 0.78;
  color: transparent;
  -webkit-text-stroke: 1px rgba(183, 243, 74, 0.55);
  letter-spacing: -0.02em;
}

.page-about .chapter-title {
  margin: 0;
  font-family: var(--font-condensed);
  font-weight: 800;
  font-size: clamp(26px, 4.2vw, 46px);
  line-height: 1.14;
  letter-spacing: -0.005em;
  color: var(--paper);
}

.page-about .about-body {
  margin: 0 0 16px;
  max-width: 62ch;
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.85;
  color: var(--mist);
}

.page-about .about-body--tight {
  margin-top: 14px;
  margin-bottom: 0;
}

/* ---------- aside ---------- */
.page-about .about-chapter__aside {
  display: grid;
  gap: 14px;
  align-content: start;
}

.page-about .aside-card {
  padding: 20px 20px 22px;
  background: var(--green-panel);
  border-left: 2px solid var(--lime);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--about-cut)), calc(100% - var(--about-cut)) 100%, 0 100%);
}

.page-about .aside-card--lime {
  border-left-color: var(--amber);
  background: rgba(18, 51, 44, 0.85);
}

.page-about .aside-card--dark {
  background: rgba(7, 11, 10, 0.72);
  border-left-color: var(--amber);
}

.page-about .aside-card__label {
  margin: 0 0 14px;
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.14em;
  color: var(--steel);
  text-transform: uppercase;
}

.page-about .aside-card__figure {
  margin: 0 0 10px;
}

.page-about .aside-card__figure .data-num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(34px, 5vw, 48px);
  color: var(--lime);
  letter-spacing: -0.02em;
}

.page-about .aside-card__text {
  margin: 0;
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .aside-list {
  margin: 0;
  display: grid;
  gap: 10px;
}

.page-about .aside-list__row {
  display: grid;
  grid-template-columns: 76px 1fr;
  gap: 10px;
  align-items: baseline;
  padding-bottom: 10px;
  border-bottom: 1px solid rgba(111, 131, 122, 0.18);
}

.page-about .aside-list__row:last-child {
  border-bottom: 0;
  padding-bottom: 0;
}

.page-about .aside-list dt {
  font-family: var(--font-mono);
  font-size: 10px;
  letter-spacing: 0.06em;
  color: var(--steel);
}

.page-about .aside-list dd {
  margin: 0;
  font-size: 13px;
  line-height: 1.6;
  color: var(--paper);
  word-break: break-word;
}

.page-about .aside-note {
  padding: 14px 16px;
  border: 1px dashed var(--about-line);
  font-size: 13px;
  line-height: 1.7;
  color: var(--mist);
}

.page-about .aside-note p {
  margin: 0;
}

.page-about .aside-note a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(183, 243, 74, 0.4);
}

.page-about .aside-note a:hover,
.page-about .aside-note a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* ---------- timeline ---------- */
.page-about .timeline {
  list-style: none;
  margin: clamp(22px, 4vw, 36px) 0 0;
  padding: 0 0 0 var(--tl-pad);
  position: relative;
}

.page-about .timeline::before {
  content: "";
  position: absolute;
  left: 9px;
  top: 6px;
  bottom: 10px;
  width: 1px;
  background: linear-gradient(180deg, var(--lime), var(--amber) 55%, rgba(183, 243, 74, 0.15));
}

.page-about .timeline__item {
  position: relative;
  padding-bottom: clamp(20px, 3vw, 30px);
}

.page-about .timeline__item:last-child {
  padding-bottom: 0;
}

.page-about .timeline__item::before {
  content: "";
  position: absolute;
  left: calc(-1 * var(--tl-pad) + 5px);
  top: 7px;
  width: 9px;
  height: 9px;
  background: var(--lime);
  clip-path: polygon(50% 0, 100% 50%, 50% 100%, 0 50%);
}

.page-about .timeline__when {
  margin: 0 0 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  color: var(--amber);
}

.page-about .timeline__name {
  margin: 0 0 4px;
  font-size: clamp(16px, 2vw, 19px);
  font-weight: 600;
  line-height: 1.5;
  color: var(--paper);
}

.page-about .timeline__text {
  margin: 0;
  max-width: 54ch;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

/* ---------- team ---------- */
.page-about .about-chapter__figure {
  margin: 0;
  border: 1px solid var(--about-line);
  clip-path: polygon(0 0, calc(100% - 30px) 0, 100% 30px, 100% 100%, 0 100%);
  background: linear-gradient(160deg, var(--green-panel), rgba(7, 11, 10, 0.9));
  align-self: start;
}

.page-about .team-split {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  margin-top: clamp(20px, 3vw, 30px);
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

.page-about .team-split__cell {
  padding: 16px 18px;
  background: rgba(11, 31, 26, 0.92);
}

.page-about .team-split__num {
  margin: 0 0 4px;
}

.page-about .team-split__num .data-num {
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: clamp(26px, 3.6vw, 36px);
  color: var(--lime);
  letter-spacing: -0.02em;
}

.page-about .team-split__label {
  margin: 0;
  font-size: 12px;
  line-height: 1.6;
  color: var(--mist);
}

/* ---------- flow ---------- */
.page-about .flow {
  display: grid;
  gap: 14px;
  margin-bottom: clamp(26px, 4vw, 40px);
}

.page-about .flow__node {
  position: relative;
  padding: 20px 20px 18px;
  background: rgba(7, 11, 10, 0.62);
  border: 1px solid var(--about-line);
  border-top: 2px solid var(--lime);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--about-cut)), calc(100% - var(--about-cut)) 100%, 0 100%);
  transition: border-color 0.25s ease, background 0.25s ease;
}

.page-about .flow__node:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 3px;
}

.page-about .flow__num {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--amber);
}

.page-about .flow__name {
  margin: 0 0 8px;
  font-size: clamp(18px, 2.2vw, 22px);
  font-weight: 700;
  color: var(--paper);
}

.page-about .flow__lead {
  margin: 0;
  font-size: 14px;
  line-height: 1.75;
  color: var(--mist);
}

.page-about .flow__detail {
  margin: 0;
  font-size: 13px;
  line-height: 1.75;
  color: var(--mist);
  max-height: 0;
  opacity: 0;
  overflow: hidden;
  transition: max-height 0.35s ease, opacity 0.3s ease, margin-top 0.3s ease;
}

.page-about .flow-figure {
  margin: 0;
  border: 1px solid var(--about-line);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - 28px), calc(100% - 28px) 100%, 0 100%);
  background: rgba(7, 11, 10, 0.7);
}

/* ---------- topics ---------- */
.page-about .topics {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1px;
  background: var(--about-line);
  border: 1px solid var(--about-line);
}

.page-about .topic {
  padding: 20px 20px 22px;
  background: var(--green-deep);
  transition: background 0.25s ease;
}

.page-about .topic__num {
  margin: 0 0 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.14em;
  color: var(--steel);
}

.page-about .topic__name {
  margin: 0 0 8px;
  font-family: var(--font-condensed);
  font-weight: 800;
  font-size: clamp(20px, 2.4vw, 26px);
  color: var(--paper);
}

.page-about .topic__text {
  margin: 0;
  font-size: 14px;
  line-height: 1.78;
  color: var(--mist);
}

.page-about .topic:hover {
  background: var(--green-panel);
}

.page-about .topic:hover .topic__num {
  color: var(--lime);
}

.page-about .topics__foot {
  margin: clamp(22px, 3vw, 30px) 0 0;
  font-size: 14px;
  line-height: 1.8;
  color: var(--mist);
}

.page-about .topics__foot a {
  color: var(--lime);
  text-decoration: none;
  border-bottom: 1px solid rgba(183, 243, 74, 0.4);
}

.page-about .topics__foot a:hover,
.page-about .topics__foot a:focus-visible {
  color: var(--paper);
  border-bottom-color: var(--paper);
}

/* ---------- partners ---------- */
.page-about .partners-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: clamp(20px, 3vw, 28px);
}

.page-about .partners-actions .btn {
  font-size: 13px;
  padding: 12px 22px;
}

/* ---------- responsive ---------- */
@media (min-width: 640px) {
  .page-about .team-split {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .topics {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 900px) {
  .page-about .about-hero__grid {
    grid-template-columns: 1.1fr 0.9fr;
  }

  .page-about .about-chapter__grid {
    grid-template-columns: minmax(0, 1.55fr) minmax(0, 0.85fr);
    align-items: start;
  }

  .page-about .about-chapter__grid--reverse {
    grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr);
  }

  .page-about .about-chapter__grid--reverse .about-chapter__main {
    order: 2;
  }

  .page-about .about-chapter__grid--reverse .about-chapter__figure {
    order: 1;
  }

  .page-about .about-chapter__aside {
    position: sticky;
    top: 96px;
  }

  .page-about .timeline {
    --tl-pad: 40px;
  }

  .page-about .flow {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }

  .page-about .flow__node:hover,
  .page-about .flow__node:focus-within {
    background: rgba(18, 51, 44, 0.9);
    border-color: var(--about-line-strong);
  }

  .page-about .flow__node:hover .flow__detail,
  .page-about .flow__node:focus-within .flow__detail {
    max-height: 200px;
    opacity: 1;
    margin-top: 10px;
  }
}

@media (min-width: 1100px) {
  .page-about .topics {
    grid-template-columns: repeat(3, 1fr);
  }

  .page-about .about-index__inner {
    justify-content: space-between;
    overflow-x: visible;
  }
}

@media (prefers-reduced-motion: reduce) {
  .page-about .flow__detail,
  .page-about .flow__node,
  .page-about .topic,
  .page-about .about-index__link {
    transition: none;
  }
}
<<<END>>>